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What is genotype of only the father having Huntington disease?
Huntington's disease is caused by a dominant allele, so if the father has the disease, his genotype would be either homozygous dominant (HH) or heterozygous (Hh). However, since the condition is typically lethal before reproduction in homozygous dominant individuals, it's most likely that the father is heterozygous (Hh). Thus, his genotype would be Hh, where "H" represents the allele for Huntington's disease and "h" represents the normal allele.
What is the difference between a homozygous dominant homozygous recessive and heterozygous individual?
They are the same
To determine if a particular plant is homozygous or heterozygous you would have to test cross with a what?
To determine if a plant is homozygous or heterozygous, you would need to test cross it with a homozygous recessive plant. If the offspring show the recessive trait, the original plant is heterozygous; if all offspring show the dominant trait, the original plant is homozygous.
What is crossing a homozygous dominant or homozygous recessive with a heterozygous?
There is a 50% chance of a homozygous dominant and a 50% chance of a heterozygous.
1 What is the difference between homozygous and heterozygous?
Homozygous refers to having two identical alleles for a trait, while heterozygous refers to having two different alleles for a trait. In other words, homozygous individuals have either two dominant or two recessive alleles, while heterozygous individuals have one dominant and one recessive allele.
Is asthma homozygous or heterozygous?
heterozygous
What are the odds that Arlo will develop huntington's disease as his father Woody did when mother was disease free and father was heterozygous?
50%
What are the genotype a of a homozygous and a heterozygous tall pea plant?
homozygous- TT; heterozygous- Tt :)
What genotype is Yy homozygous or heterozygous?
Yy is a heterozygous genotype. Homozygous would be YY or yy.
Is Huntington's disease a heterozygous genotype?
Most patients are heterozygous for the mutant copy of huntingtin however in some rare cases there are individuals who are homozygous for the disease-causing allele. Homozygosity for the disease gene does NOT cause death at the embryo stage as the previous answer stated. Huntingtin null mice show embryonic lethality, but this is when they have no copies of the huntingtin gene at all. This is not the same as being mutant for the gene. Individuals will have received one copy of the huntingtin gene from each of their parents and so the number of disease-causing CAG repeats will vary between each allele. If both copies have more than 35 repeats then they can be said to be homozygous for the mutant huntingtin allele. This seems to result in more severe symptoms and disease progression.
Why must the genotype for Huntington's chorea be heterozygous instead of homozygous dominant?
The homozygous dominant form is lethal, because it produces twice as much protein (HH = two doses of H) as Hh would. Only if you assume that the alleles for Huntingtons are co-dominant. According to an article called Homozygotes for Huntington Disease, 'the clinical expression of HD among homozygotes is not more severe than observed in heterozygotes.'
What genotype could be described as heterozygous?
Yes - Hh is heterozygous. HH is homozygous, and hh is homozygous.
What is the antonym for heterozygous?
Homozygous
What is the probability of 2 heterozygous individuals producing a heterozygous recessive offspring?
The probability is 50%. There are four probabilities: dominant homozygous, recessive homozygous, or heterozygous.
Is AA an homozygous or an heterozygous?
AA could be either homozygous or heterozygous, depending on whether the individual inherited the same allele (A) from both parents (homozygous) or different alleles (Aa) from each parent (heterozygous).
What crosses will only produce heterozygous offspring?
A cross between two individuals that are homozygous for different alleles will only produce heterozygous offspring. This is because each parent can only donate one type of allele, resulting in all offspring being heterozygous for that particular gene.
What is an allele that produce a trait in the heterozygous condition is?
homozygous
